Migrating to XML: The Case of the GUST Bulletin Archive

Ten years of experience with TeX publishing of the GUST bulletin shows that Knuth’s dream of highly portable TeX files is apparently an illusion in practice. Over the last decade, articles in the GUST bulletin have used at least six major formats (LaTeX 2.09, transitional LaTeX+NFSS, LaTeX2e, plain-based TUGboat, Eplain, and ConTeXt), numerous macro packages, fonts, and graphic formats. Many old articles are typeset differently nowadays, and some even cause TeX errors.